IOO vs. FSSNX
IOO (iShares Global 100 ETF) and FSSNX (Fidelity Small Cap Index Fund) are both funds - IOO is a Global Equities fund tracking the S&P Global 100 Index (Net), while FSSNX is a Small Cap Blend Equities fund tracking the Russell 2000 Index. Both are passively managed. Over the past 10 years, IOO returned 16.66%/yr vs 11.30%/yr for FSSNX. A 0.74 correlation means they provide meaningful diversification when combined. IOO charges 0.40%/yr vs 0.03%/yr for FSSNX.
Performance
IOO vs. FSSNX - Performance Comparison
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Returns By Period
In the year-to-date period, IOO achieves a 9.16% return, which is significantly lower than FSSNX's 18.33% return. Over the past 10 years, IOO has outperformed FSSNX with an annualized return of 16.66%, while FSSNX has yielded a comparatively lower 11.30% annualized return.
IOO
- 1D
- 0.11%
- 1M
- -2.09%
- YTD
- 9.16%
- 6M
- 10.36%
- 1Y
- 31.99%
- 3Y*
- 23.85%
- 5Y*
- 15.85%
- 10Y*
- 16.66%
FSSNX
- 1D
- 3.04%
- 1M
- 2.84%
- YTD
- 18.33%
- 6M
- 15.24%
- 1Y
- 38.39%
- 3Y*
- 17.71%
- 5Y*
- 6.13%
- 10Y*
- 11.30%
IOO vs. FSSNX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
IOO iShares Global 100 ETF | 9.16% | 27.02% | 26.54% | 27.71% | -16.34% | 26.03% | 18.61% | 30.01% | -6.22% | 23.56% |
FSSNX Fidelity Small Cap Index Fund | 18.33% | 12.94% | 11.71% | 17.11% | -20.28% | 14.70% | 19.99% | 25.70% | -11.24% | 14.54% |
Correlation
The correlation between IOO and FSSNX is 0.66, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.66 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.65 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.72 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.72 |
Correlation (All Time) Calculated using the full available price history since Sep 9, 2011 | 0.74 |
The correlation between IOO and FSSNX has been stable across timeframes, ranging from 0.65 to 0.74 - a consistent structural relationship.
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Return for Risk
IOO vs. FSSNX — Risk / Return Rank
IOO
FSSNX
IOO vs. FSSNX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares Global 100 ETF (IOO) and Fidelity Small Cap Index Fund (FSSNX). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| IOO | FSSNX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.35 | ||
| Sortino ratioReturn per unit of downside risk | +0.41 | ||
| Omega ratioGain probability vs. loss probability | 1.41 | 1.32 | +0.09 |
| Calmar ratioReturn relative to maximum drawdown | 3.23 | 3.46 | -0.22 |
| Martin ratioReturn relative to average drawdown | 14.35 | 12.23 | +2.13 |
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Drawdowns
IOO vs. FSSNX - Drawdown Comparison
The maximum IOO drawdown since its inception was -55.85%, which is greater than FSSNX's maximum drawdown of -41.72%. Use the drawdown chart below to compare losses from any high point for IOO and FSSNX.
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Drawdown Indicators
| IOO | FSSNX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -55.85% | -41.72% | -14.13% |
Max Drawdown (1Y)Largest decline over 1 year | -9.94% | -11.00% | +1.06% |
Max Drawdown (3Y)Largest decline over 3 years | -19.19% | -27.45% | +8.26% |
Max Drawdown (5Y)Largest decline over 5 years | -23.52% | -31.87% | +8.35% |
Max Drawdown (10Y)Largest decline over 10 years | -31.43% | -41.72% | +10.29% |
Current DrawdownCurrent decline from peak | -4.05% | -0.46% | -3.59% |
Average DrawdownAverage peak-to-trough decline | -11.26% | -8.28% | -2.98% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.24% | 3.11% | -0.87% |
Volatility
IOO vs. FSSNX - Volatility Comparison
The current volatility for iShares Global 100 ETF (IOO) is 4.82%, while Fidelity Small Cap Index Fund (FSSNX) has a volatility of 7.09%. This indicates that IOO experiences smaller price fluctuations and is considered to be less risky than FSSNX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IOO | FSSNX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.82% | 7.09% | -2.27% |
Volatility (6M)Calculated over the trailing 6-month period | 11.31% | 14.37% | -3.06% |
Volatility (1Y)Calculated over the trailing 1-year period | 14.07% | 19.71% | -5.64% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 17.12% | 22.68% | -5.56% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 17.80% | 23.49% | -5.69% |
IOO vs. FSSNX - Expense Ratio Comparison
IOO has a 0.40% expense ratio, which is higher than FSSNX's 0.03% expense ratio.
Dividends
IOO vs. FSSNX - Dividend Comparison
IOO's dividend yield for the trailing twelve months is around 0.84%, less than FSSNX's 0.92% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FSSNX Fidelity Small Cap Index Fund | 0.92% | 1.08% | 1.04% | 1.43% | 1.26% | 3.92% | 0.94% | 2.96% | 4.94% | 3.37% | 2.27% | 2.66% |
IOO iShares Global 100 ETF | 0.84% | 0.92% | 1.08% | 1.49% | 2.00% | 1.53% | 1.49% | 2.02% | 2.54% | 2.23% | 2.75% | 2.89% |
Frequently Asked Questions
IOO and FSSNX have a correlation of 0.66, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
FSSNX has higher volatility (7.09%) compared to IOO (4.82%). In terms of maximum drawdown, IOO dropped -55.85% vs FSSNX's -41.72%.
IOO currently has the higher Sharpe Ratio (2.28 vs 1.93), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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